Compositions of rubber derivatives and and (C08L15)

Polybutadiene with epoxy groups // 2641754
FIELD: chemistry.SUBSTANCE: polybutadiene with epoxy groups contains monomer units derived from 1,3-butadiene (A) , (B) , and (C) . In polybutadiene with epoxy groups, the relative amount of monomeric units (A) in the entire set of monomer units derived from 1,3-butadiene is from 10 to 60 mol. %, and the sum of the relative amounts of the monomeric units (B) and (C) in the entire set of monomer units derived from 1,3-butadiene is from 40 to 90 mol. %.EFFECT: invention makes it possible to reduce the viscosity and glass transition temperature of polybutadiene with epoxy groups.22 cl, 1 tbl, 3 ex

ethod of producing polydienes and polydiene copolymers with reduced cold flow // 2640800
FIELD: chemistry.SUBSTANCE: method comprises (i) polymerization of monomers with the formation of the reactive polymer, wherein the monomer includes a conjugated diene monomer, at a specified stage of polymerization using a coordination catalyst, and the said reactive polymer has a reactive end of the chain, and (ii) carrying out reactions of this reactive polymer with glycidyl ether. Also, a bound polymer and a tire component derived from a bound polymer are described.EFFECT: improved resistance of the bound polymer to cold flow.13 cl, 1 dwg, 1 tbl, 3 ex
Allylamine-containing polymers with end carbinol groups // 2640041
FIELD: chemistry.SUBSTANCE: copolymer of butadiene and styrene is provided, containing at the beginning of the polymer chains tertiary amino groups of the formula (Ia) or (Ib), where R1, R2 are the same or different and are alkyl radicals, and also contain silane-containing carbinol groups of the formula (III) at the ends of the polymer chains or their metal salts or salts of semimetals, where R3, R4, R5 and R6 are the same or different and are hydrogen or an alkyl, alkaryl and aralkyl radical, A is a divalent organic radical, which may contain, in addition to carbon and hydrogen atoms, heteroatoms such as oxygen, nitrogen, sulfur and/or silicon. A method of producing these copolymers and variants for their use, including for the production of tires and various shaped articles, are also provided.EFFECT: copolymer according to the invention is well-developed and allows the production of tires and moulded articles with the improved performance characteristics.22 cl, 2 tbl, 3 ex
Butadiene rubber with drawfully increased viscosity by mooney received with use of inodimic catalyst // 2638960
FIELD: chemistry.SUBSTANCE: invention relates to a method for the stepwise increasing the Mooney viscosity in the preparation of high molecular weight polybutadiene having a content of 1,4-cis units >95 wt %, and a content of 1,2-vinyl groups <1 wt %, wherein 1) at least, one monomer, which is 1,3-butadiene, is polymerized at a temperature of 50 to 120°C in the presence of, at least, one inert organic solvent and, at least, one neodymium carboxylate catalyst, 2) the polymerization is terminated by the addition of protonic compounds selected from the group consisting of stearic acid and lauric acid, and (3) sulfur oxides are added to the polymerizer, which, before addition, is treated with a fatty acid ether of vegetable origin, which is epoxidized soybean oil. The invention also relates to a neodymium-catalyzed high molecular weight polybutadiene, which is produced by the above method. The high molecular weight polybutadiene catalyzed by neodymium has a coefficient of its modification of 1.3 to 2.5, preferably of 1.4 to 2.1. The modifying factor is the Mooney stress relaxation ratio measured after step 2), to the Mooney stress relaxation measured after step 3), and wherein the stress relaxation is measured according to ASTM D 1466-00. In addition, the invention relates to rubber blends containing the said polybutadiene, fillers, crosslinking agents, as well as additional auxiliary components of rubber compounds selected from the group consisting of vulcanization accelerators, antioxidants, heat stabilizers, light stabilizers, antiozonants, processing aids, plasticizers, tackifiers, blowing agents, dyes, pigments, waxes, diluents, organic acids, vulcanization retardants, metal oxides, and activators. Rubber mixtures can be used to make moulded articles and modify the toughness of thermoplastics.EFFECT: improving the properties of compounds.16 cl, 3 tbl, 1 dwg

Heat-resistant fire-resistant material // 2638335
FIELD: construction.SUBSTANCE: invention can be used in the manufacture of protective clothing designed for operation in high-risk conditions and resistant to aggressive media, in particular to a material ensuring the protection from thermal risks, sparks, and metal spatter. A heat-resistant fire-resistant multilayer material with polymer coating is described, consisting of one and a half layers of a fabric made from para-aramide fibre threads, in which the fabric is characterized by interlacing with a repeat, equal to 4 threads by the warp and to 8 threads by the weft, for the building of which more than one system of weft threads is used. The spaces between the threads are less than their diameter with the surface material density not less than 320 g/m2, and the heat-resistant polymer coating of the fabric is made on the basis of fluorine rubbers and/or a silicone composition.EFFECT: fire-resistant multilayer material based on para-aramide fibre and a polymer binder with the possibility of operation in corrosive media has been obtained.3 cl, 1 dwg, 1 tbl
Functionalized polymer // 2632876
FIELD: chemistry.SUBSTANCE: method for providing a terminal functional group to a polymer comprises reacting a terminally active polymer that contains a polyene monomer unit, with α,β-ethylene unsaturated compound having the general formula (I) , where each R is independently a hydrogen atom or a C1-C10-alkyl group, M is an element of the 2-13 groups, y and z are integers under the condition that z is not zero and the sum of y+z is equal to the valence of M, and each X is independently R1, OR1, OC(O)R1, C(O)OR1 or NR12, where each R1 independently represents C1-C30-alkyl group, thereby providing the said terminal functional group of the said polymer. A terminally functional polymer prepared by the above method is also claimed.EFFECT: obtained polymer shows increased mutual activity with dispersed fillers and can be used in the production of vulcanizates.19 cl, 10 tbl, 48 ex
Amino-containing polymers with end carbinol groups // 2632425
FIELD: chemistry.SUBSTANCE: diene polymers contain at the beginning of the polymer chains the tertiary amino groups of formula (II), and also have the silane-containing carbinol groups of formula (III) d as the metal salts at the ends of the polymer chains. Moreover, R1, R2 are the same or different and are alkyl, cycloalkyl, aryl, alkaryl and aralkyl radicals, which may contain heteroatoms such as oxygen, nitrogen, sulfur and/or silicon. In the above mentioned formulas (II) and (III), Z is the divalent organic radical, which may contain, besides, the carbon and hydrogen atoms, heteroatoms such as oxygen, nitrogen, sulfur and/or silicon. Moreover, R3, R4, R5, R6 are the same or different and are hydrogen, alkyl, cycloalkyl, aryl, alkaryl and aralkyl radicals, which may contain heteroatoms such as oxygen, nitrogen, sulfur and/or silicon.EFFECT: expansion of application field.21 cl, 2 tbl, 3 ex
Production method of polymeric products, containing cyclopropane groups // 2631504
FIELD: chemistry.SUBSTANCE: production method of polymeric products, containing the cyclopropane groups, composed of the macromolecules of general formula (1): , having the units ratio (a+b):(c+d)=60-90:10-40], consists of 1,2-polybutadiene with diazomethane reaction in the organic solvent medium in the presence of the catalyst at the molar ratio of 1,2-polybutadiene: diazomethane: the catalyst equal to 1:1.0 - 3.0:0.0025 to 0.01, the process is characterized in that, the palladium (II) compounds - palladium chloride PdCl2 is used as the catalyst. As the 1,2-polybutadiene, the 1,2-polybutadiene of the atactic structure with the average molecular weight Mn from 800 to 70,000, the content of 1,2- and 1,4-polymerization links in the macromolecules is 60-90 and 10-40 mol. % or 1,2-polybutadiene syndiotactic structure with the syndiotacticity degree from 50 to 90%, the average molecular weight Mn from 35,000 to 75,000, the content of 1.2- and 1,4-polymerization links in the macromolecules is 75-95 and 5-25 mol %.EFFECT: production of polymer products, containing in macromolecules the unsubstituted cyclopropane groups, having the high functionalisation degree and different molecular weight, which can be intentionally altered in the wide range of values.2 cl, 1 tbl, 9 ex

Rubber mixture for tire treads // 2630800
FIELD: chemistry.SUBSTANCE: described the rubber mixture as one of the versions, containing the rubber component and the filler, for which the peak temperature on the temperature curve tanδ is -16.0°C or higher and -6.0°C or lower, the value of tanδ in the peak position is more than 1.13, tanδ at 0°C is 0.95 or more and the value, obtained by dividing the absolute value of the difference between the values of tan δat -5°C and tanδ at 5°C by the temperature difference between -5 and 5°C {|(tanδ at -5°C)-(tanδ at 5°C)|/10} (/°C) is less than 0.045/°C. The invention also relates to the rubber mixture embodiment, containing the rubber component and the filler, including at least two types of styrene-butadiene copolymer rubber, differing in bound styrene content, and the filler. The indicated mixture is the rubber compound for tire treads in which the difference between the bound styrene St (A) content in the styrene-butadiene copolymer rubber (A), having the high bound styrene content and the bound styrene content St (B) in the styrene-butadiene copolymer rubber (B), having the low bound styrene content, {St(A)-St(B)} is 6-22 wt % and tanδ of which at 0°C is 0.95 or more, and the value obtained by dividing the absolute value of the difference between the tan valuesδ at -5°C and tanδ at 5°C by the temperature difference between -5 and 5C° {|(tanδ at -5°C)-(tanδ at 5°C)|/10} (/°C) is less than 0.045/°C.EFFECT: invention provides the rubber mixtures production for tire treads, corresponding to higher requirements for low heat generation and wet braking efficiency.11 cl, 1 tbl, 1 dwg, 6 ex
Tire element, hydrogenated polymer based on conjugated diene and polymer composition // 2628603
FIELD: chemistry.SUBSTANCE: tire element is a tire element obtained by subjecting to a treatment for obtaining cross links of a composition containing a hydrogenated polymer based on a conjugated diene and a cross-linking agent. The used hydrogenated polymer based on conjugated diene is a hydrogenation product of a polymer based on conjugated diene which contains structural units derived from butadiene and has a functional group at one end of the chain or at both ends of the chain. The functional group is one or more groups selected from the group consisting of an amino group, an imino group, a pyridyl group, a phosphino group, a thiol group and a hydrocarbyloxysilyl group.EFFECT: tire element is satisfactory with respect to the minimum fuel consumption coefficient and has a higher strength and better abrasion resistance than conventional tire elements.20 cl, 4 tbl, 5 ex
ethod of obtaining polydienes and polydiene copolymers with reduced purity on cold // 2627705
FIELD: chemistry.SUBSTANCE: method for preparing the bound polymer comprises the steps of: (i) polymerizing a conjugated diene monomer and optionally a copolymerizable monomer thereto to produce a polymer containing a reactive end group; (ii) reacting the reactive end group of the polymer with a polyisocyanate having an amount of functional groups of X to form an intermediate polymeric product; and (iii) reacting mentioned intermediate polymer product with a polyol having a functional group number of Y with a bound polymer product, wherein X+Y≥5. A bound polymer and a tire component are also claimed.EFFECT: obtained polymers exhibit greater resistance to cold flow, have good technological properties of cured mixtures.18 cl, 4 tbl
Vulcanized compositions based on epoxy-containing group of nitrile rubber // 2622655
FIELD: chemistry.SUBSTANCE: composition comprises at least one epoxy group containing nitrile rubber which contains repeating units of one conjugated diene, at least one α,β-unsaturated nitrile and optionally one or more other copolymerizable monomers, but which lacks repeating units of nonconjugated cyclic polyenes; as crosslinking agent at least one Lewis acid; and at least one cross-linking accelerator selected from the group consisting thiurams, ksatogenaty, thiourea, dithiocarbamates and carbamates.EFFECT: invention produces vulcanizates with favorable performance compression set at room temperature, and at the same time a high tensile stress and elongation at break optimal.6 cl, 14 tbl, 4 ex
ethod of obtaining functionalized and branched elastomeric copolymers and their use in vulcanizable elastomeric compositions // 2621672
FIELD: chemistry.SUBSTANCE: method for obtaining a functionalized and branched elastomeric copolymer comprises the following stages: (a) anionic copolymerization of at least one conjugated diene monomer and at least one vinylarene in the presence of at least one hydrocarbon solvent, at least a lithium initiator and at least one polar modifier with obtaining a solution containing the elastomeric copolymer; (b) reacting at least 10 wt % of the polymer chains of the elastomeric copolymer obtained at the stage (a), at least one compound containing at least one functional group selected from epoxides, ketones, esters, aldehydes, with obtaining a solution containing the functionalized elastomeric copolymer; (c) adding to the solution obtained at the stage (b) the lithium initiator in a quantity exceeding from 1 to 4 times the molar quantity of the initiator used at the stage (a), as well as bromine compounds of the general formula (I): R-Br (I), where R is a linear or a branched C1-C30 alkyl group, a C3-C30 cycloalkyl group, a C6-C30 aryl group. A vulcanizable elastomeric composition and a vulcanized final product are claimed as well.EFFECT: copolymer obtained by the method provides a vulcanizable composition with good dynamic and mechanical properties and better processability.20 cl, 3 tbl, 8 ex
Rubber mixture for manufacturing acoustic coatings // 2615378
FIELD: chemistry.SUBSTANCE: rubber composition for the manufacture of acoustic coatings includes parts by weight of synthetic rubber epichlorohydrin - 70.0, -80.0; synthetic rubber, propylene oxide - 20.0-30.0; sulfur - 2.0-3.0; thiuram D - and kaptaks 2.0-3.0 - 0.5-1.5; zinc oxide - magnesium and 3.0-5.0 - 2.0-3.0; stearic acid - 1.0-1.5; active carbon black N 220 - 30.0-35.0; plasticiser - dibutyl - 3.0-5.0; softener - Industrial oil I-12A - 25.0-35.0; sorbitan monostearate technological additive - 1.0-2.0; polymer filler trans polynorbornene - 20.0-25.0.EFFECT: invention can improve the processing properties of the moulding, to increase the effect of sonar protivogidrolokatsionny special multi-layer coating structure, made of a rubber mixture.2 tbl
Graft polymer and thermoreversibly cross-linked bitumen/polymer composition containing such graft polymer // 2606499
FIELD: chemistry.SUBSTANCE: invention discloses a graft polymer, comprising a main polymer chain P, containing conjugated diene links; at least one side graft chain G, represented by general formula (1) R-(OCH2CH2)m-S-, (1), where R is a saturated, linear or branched hydrocarbon chain, containing at least 18 carbon atoms, and m is an integer, ranging from 0 to 20, wherein said graft chain G is bonded to main polymer chain P through a sulphur atom of formula (1); and at least one grafted chain G', represented by general formula (4) -S-R’-S-, (4), where R’ is s hydrocarbon group, saturated or unsaturated, linear or branched, cyclic and/or aromatic, containing from 2 to 40 carbon atoms, optionally containing one or more heteroatoms, wherein said graft chain G' is bonded to main polymer chain P using each sulphur atom from formula (4). Invention discloses a method of producing graft polymer and use thereof to obtain thermoreversibly cross-linked bitumen/polymer composition. Present invention also relates to thermoreversibly cross-linked bitumen/polymer composition, containing such graft polymer, method for production thereof and to a bitumen mixture, including such composition.EFFECT: technical result is improvement of rheological properties, in particular, mechanical and elastic properties, and cohesive capacity thermoreversibly cross-linked bitumen/polymer compositions.20 cl, 2 tbl

Rubber mixture and pneumatic tire // 2605250
FIELD: rubber industry.SUBSTANCE: invention relates to rubber mixtures and pneumatic tires, produced from them. Rubber mixture contains for 100 wt% of rubber component at least 35 wt% of butadiene-styrene rubber, conjugated diene polymer and silicon dioxide with specific surface area, measured from nitrogen adsorption from 40-400 m2/g. Conjugated diene polymer is produced by monomer component polymerization, including conjugated diene compound, and silicon-containing vinyl compound, in presence of polymerization initiator of formula (I):with production of copolymer. Then interacts with compound, containing at least one atom of nitrogen atom and/or silicon atom, with copolymer active terminal group. Rubber mixture contains: conjugated diene polymer from 1 to 90 wt%; rubber based on polyisoprene from 0 to 40 wt% per 100 wt% of rubber component; silicon dioxide from 10 to 150 wt%. per 100 weight parts of rubber component.EFFECT: invention allows to obtain rubber mixture, which enables to achieve balanced improvement of processability, fuel saving, rubber strength, resistance to abrasive wear, gripping with wet road surface and driving stability properties.17 cl, 25 tbl, 213 ex

Rubber mixture and pneumatic tyre // 2604239
FIELD: chemistry.SUBSTANCE: invention relates to rubber mixtures and pneumatic tyres made therefrom. Rubber mixture contains a conjugated diene polymer and silicon dioxide with specific surface area, measured from nitrogen adsorption from 40-400 m2/g. Conjugated diene polymer is obtained by polymerising a monomer component, including a conjugated diene compound and a silicon-containing vinyl compound, in presence of a polymerisation initiator. Then reaction with a compound containing a nitrogen atom and/or a silicon atom, with an active terminal group of copolymer. Amount of diene polymer from 1 to 90 wt%, amount of rubber based on polyisoprene from 0 to 70 wt %, each per 100 wt% of rubber component. Amount of silicon dioxide from 10 to 150 pts.wt per 100 pts.wt of rubber component.EFFECT: invention enables to obtain a rubber mixture which enables to achieve balanced improvement of processability, fuel saving, strength of rubber, resistance to abrasive wear, grip with wet road surface and driving stability.17 cl, 25 tbl, 215 ex

Vulcanized compositions based on epoxy groups containing nitrile rubbers // 2604218
FIELD: chemistry.SUBSTANCE: invention relates to vulcanized compositions based on epoxy groups containing nitrile rubbers. Vulcanized composition in the solid form contains nitrile rubber with epoxy groups, which contains repeating links, conjugated diene derivatives and α,β-unsaturated nitrile. As a cross-linking agent the composition contains Lewis or Brensted acid. Herewith the amount of other cross-linking agents is less than 2.5 wt% per 100 wt% of nitrile rubber with epoxy groups.EFFECT: vulcanizates as per the invention have extremely low residual compression at room temperature, 100 °C and 150 °C and are characterized by high tension stress and high breaking elongation.14 cl, 22 tbl

Rubber mixture and pneumatic tyre // 2603370
FIELD: chemistry.SUBSTANCE: invention relates to a rubber mixture and pneumatic tyre. Rubber mixture contains silicon dioxide and conjugated diene polymer, which is obtained by reacting a compound containing a nitrogen atom and a silicon atom, with an active end of a copolymer obtained by polymerising a monomer component containing a compound of conjugated diene, and silicon-containing vinyl compound. Reaction uses a polymerisation initiator of formula (I). Content of conjugated diene polymer per 100 wt% of rubber component ranges from 5 to 90 wt%. Silicon dioxide is included in an amount of 10 to 150 pts.wt per 100 pts.wt rubber component.EFFECT: invention improves fuel saving, properties of adhesion with wet road surface, wear resistance and manufacturability in a balanced manner.6 cl, 12 tbl

ethod of producing halogenated butyl rubber and apparatus for producing butyl rubber adhesive with reduced losses // 2602892
FIELD: chemistry.SUBSTANCE: present invention relates to a method of producing halogenated butyl rubber and an apparatus for producing butyl rubber adhesive for use in production of halogenated butyl rubber. Method and apparatus permit direct mixing of aqueous rubber slurry with a non-halogenated organic solvent to make a rubber adhesive solution. Water layer is then separated from partially dissolved rubber adhesive and adhesive phase is sent for halogenation. Apparatus is an enclosed vessel comprised of at least one dissolving zone and at least one separator zone.EFFECT: method and apparatus advantageously employ recycle of rubber adhesive in order to disrupt an interface layer that forms between water and rubber adhesive, to thereby improve continuous operation of process.16 cl, 12 dwg, 9 tbl, 3 ex

ethod for production of rubber ionomers and polymer nanocomposites // 2601756
FIELD: chemistry.SUBSTANCE: invention relates to a method of producing rubber ionomers and polymer nanocomposites. Method of producing rubber ionomers involves steps of feeding into extruded unit concentrated liquid containing bromated rubber and a volatile compound, and a nucleophile containing nitrogen and/or phosphorus. Inside extruder unit there is partial reaction of bromated rubber with nucleophile and formation of rubber ionomers. Volatile compound is partially removed. Filler is added to obtain nanocomposites.EFFECT: invention enables to obtain rubber ionomers which do not contain water and solvents, as well as polymer nanocomposites using an energy-saving, environmentally friendly method.22 cl, 7 dwg, 1 tbl, 15 ex

ethod of producing articles from polymer and obtained article // 2599761
FIELD: medicine.SUBSTANCE: invention relates to methods of producing articles from polymer for use in medicine. Proposed method comprises steps of producing a polymer solution by mixing a first compound containing a carbodiimide groups, with a second compound containing carboxylated groups, application of polymer solution on a shaper, where step of application is carried out for not more than 2 hours after obtaining a polymer solution, and curing polymer solution. Polymer solution may contain a pH regulator, consisting of ammonium hydroxide.EFFECT: technical result is reduction of costs due to reduced time required for production.17 cl, 10 tbl, 27 ex

Elastomeric composites containing modified fillers and functionalised elastomers // 2598464
FIELD: chemistry.SUBSTANCE: invention relates to elastomeric composites. Elastomeric composition contains a functionalised elastomer and modified filler, which has triazole adsorbed thereon. Functionalised elastomer is a functionalised diene elastomer.EFFECT: invention improves hysteresis and wear resistance of elastomer compositions, and enables to achieve balance of hysteresis properties and wear resistance.69 cl, 43 tbl

Stabilisation of polymers containing a hydrolysable functionality // 2597080
FIELD: chemistry.SUBSTANCE: present invention relates to a method of stabilization of polymers with Mooney viscosity growth. Method involves polymerisation of conjugated diene monomer, not necessarily with a monomer copolimerizable therewith, to alkyllithium initiation to obtain polymer "glue" with a "live" polymer in it; the reaction of the "live" polymer with a functionalising agent containing a hydrolysable functional group. Method includes introducing a stabilizing agent to the polymer, where the stabilizing agent is defined by the formula , where χ is a hydrolyzable group that forms an acidic species upon hydrolysis, where R2, R3 and R4 are each independently a halogen atom, a hydrocarbyl group, a hydrocarboxylate group, or a hydrocarbyloxy group. Functionalised polymer is extracted.EFFECT: invention increases the resistance to Mooney viscosity growth.9 cl, 4 tbl, 7 ex

Ether-containing ether, carbinol-terminated polymers // 2592527
FIELD: chemistry. SUBSTANCE: invention relates to polymers containing functional terminal groups. Polymer functionalised with terminal groups is a diene polymer or a diene copolymer obtained by copolymerisation of dienes with vinyl aromatic monomers and has at end of chain an ether-containing carbinol group of formula (I). Other polymer functionalised with terminal groups has terminal groups in form of metal salts of formula II. EFFECT: invention reduces viscosity of rubber during processing and storage. 17 cl, 2 tbl, 5 ex

Silane-containing carbinol-terminated polymers // 2591254
FIELD: chemistry.SUBSTANCE: invention relates to polymers containing functional terminal groups. Polymer, which is functionalised by terminal groups, represents diene polymer or diene copolymer obtained by copolymerisation of dienes with vinyl aromatic monomers. At end chain has silane-containing carbinol group of formula (I) wherein R1, R2, R3, R4 are identical or different and denote H or alkyl, which may contain heteroatoms from group O and N. A denotes divalent organic residue, which together with C and H may contain heteroatoms, such as O and N.EFFECT: invention increases reaction-capacity of silanes, reduces viscosity of rubber during processing and storage and improves dispersion of filler.17 cl, 2 tbl, 5 ex

Rubber mix and air tube // 2574246
FIELD: motor car construction.SUBSTANCE: claimed rubber mix comprises the rubber component and silicon dioxide. Said rubber component contains 30-90 wt % of bonded diene polymer per 100 wt % of the rubber component. Said bonded diene polymer contains the structural unit obtained from the bonded diene and structural unit described by formula (I). Terminal group of the bonded diene polymer is modified by the compound of formula (II). The rubber component contains the extra natural and butadiene rubber. The content of silicon dioxide per 100 wt % of the rubber component makes 10-100 wt %.EFFECT: better fuel saving and grip with wet road surface, higher wear resistance.6 cl, 4 tbl, 6 ex

Rubber mixture and pneumatic tyre // 2573870
FIELD: field.SUBSTANCE: invention relates to rubber mixture and tyre. The invention provides improved balance if fuel economy, engagement of tyre with wet road surface and wear resistance. Rubber mixture includes caoutchouc component and silicon oxide. Caoutchouc component contains not less than 5 wt % of conjugated diene polymer, counted per 100 wt % of caoutchouc component. Conjugated diene polymer contains structural unit, obtained from conjugated diene, of the following formula (I) and at least one terminal group of conjugated diene polymer is modified with compounds of formulae (IIc) or (IIIa). Content of silicon oxide constitutes from 5 to 150 wt p per 100 wt p of caoutchouc component.EFFECT: improved balance of fuel economy, adherence of tyre to wet road surface and wear resistance is provided.8 cl, 4 tbl, 8 ex

ethod of producing polymer products containing unsubstituted cyclopropane groups in macromolecules // 2571431
FIELD: chemistry.SUBSTANCE: invention relates to a method of producing polymer products with unsubstituted cyclopropane groups of general formula (1) , where (a+b):(c+d)=60-95:5-40 mol %. The method includes reacting atactic-structure 1,2-polybutadiene with a diazo-compound in a medium of methylene chloride in the presence of a metal complex catalyst at 0-5°C. The molar ratio 1,2-polybutadiene:diazomethane:catalyst is equal to 1:0.5-2.0:0.01. As the catalyst copper (II) triflate - Cu(OTf)2 or a copper (I) triflate and benzene complex - (CuOTf)·0,5C6H6 are used.EFFECT: obtaining polymer products containing in macromolecules unsubstituted cyclopropane groups, having a different degree of functionalisation and different molecular weight, which can be intentionally altered in a wide range of values.2 cl, 1 tbl, 8 ex

Tyre and rubber composition containing graft polymer // 2570882
FIELD: chemistry.SUBSTANCE: invention relates to a tyre containing a diene elastomer-based rubber composition, reinforcing filler, a chemical crosslinking agent and 0.1-2.0 mol % of a modifier selected from compounds of formula (I): , where R denotes a link having at least one reactive group, R1 is hydrogen, R2 is an alkylene radical containing 2-8 carbon atoms and optionally one or more heteroatoms selected from S, N, O or Si, A is an oxygen or sulphur atom or a =NH group, preferably an oxygen atom.EFFECT: invention increases MSA module, improves relative elongation and breaking strength with considerable reduction of hysteresis of the composition.8 cl, 2 tbl

Rubber mix and air tube // 2568475
FIELD: motor car construction.SUBSTANCE: Claimed rubber mix contains 100 wt % of rubber component and 5-150 wt % of silicon dioxide. Sid rubber component contains 5-90 wt % of coupled diene polymer, 5-70 wt % of natural rubber and 5-60 wt % of butadiene rubber proceeding from 100 wt % of the rubber component. Coupled diene polymer contains the structural link based thereon and structural link described by the formula (I). At least one of the end groups of said coupled diene polymer is modified by the compound containing the group described by the formula (III).EFFECT: fuel saving, better grip on wet rod surface and wear resistance.8 cl, 4 tbl

Functionalised diene-based elastomer and rubber composition containing same // 2565706
FIELD: chemistry.SUBSTANCE: invention relates to a functionalised diene-based elastomer and to a composition based thereon. The functionalised diene-based elastomer is 75-95 wt % monofunctional elastomer which carries at one chain end a silanol functional group or a polysiloxane block with a silanol end without functionalisation at the other end, and 5-25 wt % of the elastomer is bonded or star-branched by tin.EFFECT: invention reduces cold flow without deterioration of processing properties and hysteresis properties.17 cl, 1 ex, 4 tbl

Polymers functionalised with nitrile compounds containing protected amino group // 2564352
FIELD: chemistry.SUBSTANCE: invention relates to functionalised polymers and method for their manufacture. A method for preparing a functionalised polymer comprises the steps of: polymerising diene monomer, and optionally co-diene monomer, using an anionic initiator to form a reactive polymer and the reactive reaction of the polymer with a compound containing a nitrile protected amino group. The protected amino group is selected from the group, consisting of acyclic fragments, heterocyclic fragments and non-aromatic cyclic fragments.EFFECT: invention can reduce hysteresis of rubber vulcanisates.12 cl, 1 dwg, 3 tbl, 25 ex

odifier, method of obtaining modified polymer of conjugated diene with application of modifier and modified polymer of conjugated diene // 2543874
FIELD: chemistry.SUBSTANCE: invention relates to a modifier, a method of obtaining a modified polymer and the modified polymer of a conjugated diene. The modifier for the polymer of the conjugated diene is obtained as a result of the complete condensation for a silicon-containing compound, which has a protected primary amino group and hydrolysable groups. The method of obtaining the modified polymer based on the conjugated diene includes a stage of modification and stage of the protection withdrawal. The tage of the protection is carried out after the completion of modification, and the used polymer based on the conjugated diene is preferably such that 10% of its polymer chains possess live and pseudolive properties.EFFECT: modified polymer based on the conjugated diene is characterised by an excellent ability of small heat release and resistance to abrasion, which is used in a caoutchouc composition for the pneumatic tread.13 cl, 4 tbl, 23 ex
Hnbr compositions with very high levels of content of filling agents, possessing excellent processability and resistance to aggressive liquids // 2522622
FIELD: chemistry.SUBSTANCE: invention relates to an elastomeric composition. The composition contains hydrated nitrile rubber and 250-350 parts of a filling agent per 100 parts of rubber. The filling agent is represented by carbon soot. Nitrile rubber has Mooney viscosity below 55.EFFECT: invention makes it possible to improve processability with high content of the filling agent and demonstrates good resistance to aggressive liquids and fuels.8 cl, 2 tbl

Pneumatic tire // 2507080
FIELD: transport.SUBSTANCE: invention relates to automotive industry. Tire has bead core, carcass layer, tread rubber later, inner sealing layer, side strip reinforcement and filler cord layer. It differs from known designs in the use of rubber composition (a) including (A) rubber component and (B) filler and in that its dynamic accumulation modulus (E') equals 10 MPa or less at dynamic strain of 1% at 25°C. It is characterised by magnitude Σ of loss tangent tan δ at 28 to 150°C, equal to 5.0 or less as far as physical properties of vulcanised rubber is concerned.EFFECT: smooth run, sufficient life in run with flat tire.23 cl, 3 dwg, 4 tbl

odified elastomeric polymers // 2504555
FIELD: chemistry.SUBSTANCE: modified elastomeric polymer is obtained from at least the following components: i) a living anionic elastomeric polymer; ii) a modified linking agent of formula 1: (R1O)3Si-R4-S-SiR3 3; iii) a polymer chain end modifying agent of formula 3: (R1O)x(R2)ySi-R4-S-SiR3 3.EFFECT: invention reduces hysteresis losses, which reduces rolling resistance in the elastomeric product and saves fuel.19 cl, 15 tbl, 33 ex
odified butadiene copolymer latex with alkyl (meth) acrylate or butyl acrylate links // 2496796
FIELD: chemistry.SUBSTANCE: invention relates to latex used in impregnating compounds for binding reinforcing textile materials to rubber when making tyres and other rubber articles, and can be used in synthetic rubber industry. The butadiene copolymer latex with methyl (meth) acrylate or butyl acrylate links is modified by mixing with 0.8-3.0 wt % monoethanolamine with respect to dry substance of latex.EFFECT: such latex provides reproducibility of strength properties of the bond between polyester chord and rubber compared to the prototype.1 cl, 1 tbl, 12 ex

ethod of producing modified polymers from conjugated dienes, modified polymers from conjugated dienes, rubber compositions and covers // 2484104
FIELD: chemistry.SUBSTANCE: disclosed is a method of producing a modified polymer based on a conjugated diene, involving a step (a) of conducting a reaction between a silicon compound and a conjugated diene-based polymer having an active group terminal group so that the reaction takes place on the terminal group, wherein the silicon compound in its molecule contains a protected primary amine group which is removed by hydrolysis to obtain a primary amine group, and a bifunctional silicon atom bonded to a hydrocarbyloxy group and a reactive group, which modifies the active terminal group, and a step (b) for carrying out a condensation reaction which involves participation of the compound which contains a bifunctional silicon atom in the presence of a titanium compound which is used as a titanium-based condensation accelerator. The reactive group at the silicon atom is a hydroxycarbyloxy group which contains 1-20 carbon atoms. Also disclosed is a modified polymer obtained using the disclosed method, a rubber composition containing said polymer and a pneumatic cover using the disclosed composition.EFFECT: method enables to obtain a polymer which has excellent operational properties.13 cl, 9 tbl, 30 ex

ethod of producing modified conjugated diene polymer, modified conjugated diene polymer and rubber composition // 2481361
FIELD: chemistry.SUBSTANCE: present invention relates to production of a modified conjugated diene polymer. Described is a method of producing a modified conjugated diene polymer which involves a modification step (A) where a conjugated diene polymer having content of cis-1,4 bonds of 98.5% or higher, content of 1,2-vinyl bonds of 0.5 wt % or less, ratio (Mw/Mn) of weight-average molecular weight (Mw) to number-average molecular weight (Mn), which is determined by gel permeation chromatography, of 3.5 or less, and Mooney viscosity (ML1+4 (100°C)) at 100°C ranging from 5 to 50 and having active ends, is subjected to a modification reaction with introduction of an alkoxy silane compound which contains two or more reaction groups, including an alkoxy silyl group, and at least one functional group selected from (f) an epoxide group and (g) an isocyanate group, into the active end of the chain of the conjugated diene polymer, and a condensation step (B), where a residue of the alkoxy silyl compound introduced into the active end of the polymer chain is subjected to a condensation reaction in the presence of a condensation catalyst which includes at least one element selected from Ti, Sn, Bi, Zr and Al. Also described is a modified conjugated diene polymer obtained using said method. Described is a rubber composition for use in tyre components, which contains said modified conjugated diene polymer as a rubber component. Described is a tyre component which contains said rubber composition, as well as a tyre which has said tyre component.EFFECT: obtaining a modified conjugated diene polymer which can be used as material of a rubber mixture for producing rubber with low heat release and excellent wear-resistance.12 cl, 5 tbl, 28 ex

Tire made using rubber composition containing modified polymer // 2475368
FIELD: transport.SUBSTANCE: invention relates to production of tires. Tire is produced using the mix comprising modified polymer based on bonded diene whereto added is functional group with high affinity with silicon dioxide, and precipitated silicon dioxide with specific surface area absorbing cetyl tri-methyl ammonium bromide (CTMAB) (m2/g) and mode Aac for diameters (nm) of primary aggregates defined by acoustic measurement of particle size distribution satisfies the equation (A): Aac ≥ -0.76 × (CTMAB) + 274 (A).EFFECT: better fracture response and wear resistance.16 cl, 7 tbl, 19 ex

Rubber mixture for tyre and pneumatic tyre made from said mixture // 2472816
FIELD: chemistry.SUBSTANCE: mixture contains a rubber component which contains a natural rubber component consisting of at least either natural rubber or epoxidated natural rubber. The mixture also contains inorganic filler containing at least silicon dioxide. Content of said inorganic filler ranges from 50 pts.wt to 80 pts.wt per 100 pts.wt said rubber component when the rubber mixture is used to obtain rubber for the clinch, and from 60 pts.wt to 100 pts.wt per 100 pts.wt said rubber component when the rubber mixture is used to obtain rubber for the sidewall filler. Content of soot in the rubber mixture ranges from 2 pts.wt to 5 pts.wt pr 100 pts.wt said rubber component. If the rubber mixture is used for the sidewall filler, the inorganic filler contains silicon dioxide and clay, the amount of clay in the mixture being equal to 5-40 pts.wt per 100 pts.wt rubber component and the total amount of silicon dioxide and clay is at least 65 pts.wt per 100 pts.wt rubber component. The result is reducing the amount of materials derived from oil resources when producing the rubber mixture.EFFECT: improved operational characteristics.8 cl, 1 dwg, 5 tbl, 16 ex

Rubber mixture for side walls and pneumatic tyre made from said mixture // 2472815
FIELD: chemistry.SUBSTANCE: rubber mixture contains 100 pts.wt rubber component, 1-4 pts.wt technical carbon, 10-40 pts.wt silicon dioxide and 5-30 pts.wt inorganic filler component. The filler component consists of at least one inorganic filler selected from a group consisting of clay, sericite, talc, aluminium hydroxide, magnesium carbonate and mica. Said rubber component consists of natural rubber and epoxidated natural rubber. Content of said natural rubber in said rubber component ranges from 60 wt % to 70 wt %. Hardness after cross-linking is equal to or less than 50 units on scale A of a hardness gauge. The present rubber mixture has low content of material derived from oil.EFFECT: low fuel consumption owing to low rolling resistance, and present rubber mixture has satisfactory resistance to crack growth in flexure.2 cl, 1 dwg, 2 tbl, 6 ex

Rubber mixture for tyres, tyre component, rubber mixture for tread base, tread base and tyre // 2467035
FIELD: chemistry.SUBSTANCE: invention relates to rubber mixtures for making tyres. The rubber mixture for making tyres contains a rubber component which contains at least one rubber selected from natural rubber and epoxidated natural rubber, silicon dioxide, vegetable wax and a silane binding agent. Silicon dioxide content ranges from 10 pts.wt to 110 pts.wt per 100 pts.wt rubber component. Wax content ranges from 1.2 to 2 wt % based on total weight of the rubber mixture. The invention also provides a tread (2), a side wall (3), a clinch part (4) and a tyre (1) made from this mixture. The invention also provides a rubber mixture for use in making the base (12b) of a tyre tread (11) which contains 100 pts.wt rubber component which contains diene rubber, 20-70 pts.wt silicon dioxide, 2-15 pts.wt vegetable wax and a silane binding agent. The invention also provides the base (12b) of a tyre tread and a tyre (11) made from this rubber mixture. The result is fewer components made from oil resources. The rubber mixtures have excellent wear resistance and resistance to discolouration.EFFECT: use of the rubber mixture for the base of a tyre tread reduces fuel consumption of the vehicle.12 cl, 2 dwg, 2 tbl, 25 ex

ethod of producing modified conjugated diene polymer, modified conjugated diene polymer and rubber composition // 2464280
FIELD: chemistry.SUBSTANCE: method involves carrying out a modification reaction when a reaction takes place between a modifier, which contains a certain compound, and a conjugated diene polymer, having content of cis-1,4-bonds equal to or higher than 98.5% and having an active terminal group. The modifier is introduced into the active terminal group of the conjugated diene polymer to obtain a modified conjugated diene polymer. The invention also relates to a rubber composition, containing the obtained modified conjugated diene polymer as a rubber component, a tyre component containing said rubber composition, and a tyre casing having said tyre component.EFFECT: obtained modified conjugated diene polymer is characterised by excellent wear-resistance, excellent mechanical properties and low cold flow.12 cl, 4 tbl, 9 ex

ethod of producing modified conjugated diene polymer, modified conjugated diene polymer and rubber composition // 2455314
FIELD: chemistry.SUBSTANCE: invention relates to a method of producing a modified conjugated diene polymer. The method involves (A) a primary modification reaction by reacting a heterocumulene compound (a), having two or more functional groups of general formula X=C=Y, where X denotes a carbon atom or a nitrogen atom and Y denotes an oxygen atom, a nitrogen atom or a sulphur atom, with a conjugated diene polymer. Said polymer has content of vinyl groups less than 10%, content of cis-1,4-bonds equal to or greater than 75% and has an active terminal group. Step (B) for secondary modification involves a reaction between a hydrocarbon compound (b), containing active hydrogen, and a primary-modified conjugated diene polymer until a secondary-modified conjugated diene polymer is obtained. Compound (b) has one or more functional groups selected from a group consisting of amino group, imino group, mercapto group and hydroxyl group. The amount of each of the components (a) and (b) ranges from 0.02 to 20 moles. The invention also relates to a rubber composition, a tyre component containing said rubber composition, and a tyre casing having said tyre component. The rubber composition contains the obtained modified conjugated diene polymer and technical carbon and/or silicon dioxide.EFFECT: method enables to obtain a modified conjugated diene polymer characterised by low heat buildup (low fuel consumption) and excellent wear-resistance.14 cl, 3 tbl, 11 ex

Vulcanizing mixture containing partially hydrogenated vinylarene conjugated diene branched polymers // 2442806
FIELD: chemistry.SUBSTANCE: The invention relates to polymer chemistry, in particular, to raw elastomer composition used to manufacture tire treads. The composition contains: (a1) from 30 to 90% by weight of partially hydrogenated vinylarene conjugated diene static elastomer copolymer; (a2) from 10 to 70% by weight of one or several diene rubbers. For the total quantity of rubber (a1 + a2) parts, which equals to 100, the following components are added, (b) from 10 to 150 phr of silicon dioxide; (c) from 0,1 to 20 phr of mixing agent based on silane and (d) from 0,1 to 10 phr or vulcanizing agent. The component (a1) of the composition is characterized by the fact that the partially hydrogenated vinylarene conjugated diene static elastomer copolymer has the structure with nodes which are statistically distributed in the macromolecule. The nodes branch out the polymer chains. Furthermore, the link between the said nodes and the said branches is the carbon-carbon link. EFFECT: increased Mooney viscosity of the partially hydrogenated vinylarene conjugated diene copolymers with the abovementioned structure; improved general mechanical properties of the polymer matrix and properties of mixtures based on the dais rubbers. 10 cl, 4 tbl, 12 ex

ethod of producing modified polymer, modified polymer obtained using said method and rubber composition containing said polymer // 2440384
FIELD: chemistry.SUBSTANCE: invention discloses a method of obtaining a modified polymer, involving: performing a modification reaction for an alkali metal-containing active terminal group of a conjugated diene polymer under the effect of an alkoxysilane compound, where the conjugated diene polymer is obtained as a result of performing for a diene monomer or diene monomer and a monomer different from the diene monomer amine polymerisation in a hydrocarbon solvent using an alkali metal-based initiator; and conducting a condensation reaction of the obtained product in the presence of a condensation accelerator, which contains a compound of at least one element selected from group 4A elements (except Ti), group 3B elements and group 5B elements; in which the alkoxysilane compound is at least one alkoxysilane compound selected from alkoxysilane compounds of the following general formula (I), and/or incomplete condensates thereof, where R1 and R2 separately denote a monovalent aliphatic hydrocarbon group containing 1-20 carbon atoms or a monovalent aromatic hydrocarbon group containing 6-18 carbon atoms, and a is a whole number from 0 to 2 under the condition that, in the presence of several OR2, said OR2 can be identical or different, and an active proton is not included in the molecule, and alkoxysilane compounds of the following general formula (II), and/or incomplete condensates thereof, where A1 denotes a monovalent group having at least one functional group selected from an imine group, a cyclic tertiary amino group, a non-cyclic tertiary amino group, a pyridine group, a silazane group and a bisulphide group, R3 denotes a single bond or a divalent hydrocarbon group, R4 and R5 separately denote a monovalent aliphatic hydrocarbon group containing 1-20 carbon atoms, or a monovalent aromatic hydrocarbon group containing 6-18 carbon atoms, and b is a whole number from 0 to 2 under the condition that, in the presence of several OR5, several OR5 can be identical or different, and an active proton is not included in the molecule. The invention also discloses a modified polymer obtained using the method described above, a rubber composition for tyres which contains said modified polymer. The invention also describes a rubber composition for tyres, which contains 100 pts.wt rubber component and 20-120 pts.wt silicon dioxide and/or technical carbon, where the rubber component contains said modified polymer in amount of 20 wt % or higher.EFFECT: obtaining a modified polymer, characterised by low rolling resistance, high skid resistance on a wet road surface and excellent wear resistance.11 cl, 9 tbl, 24 ex
Composition containing polymers functionalised by several functional groups // 2437904
FIELD: chemistry.SUBSTANCE: in order to obtain a polymer composition which can be used to make rubber articles which demonstrate an acceptable balance of operational properties, a polymer is functionalised to increase degree of interaction between the polymer and different filler particles, for example silicon dioxide and technical carbon. A composition containing carbanion polymer chains is obtained. Part of said chains reacts with a first compound to obtain a first functionalised polymer. A second compound is added to the composition and the other part of the polymer chains reacts with the second compound to obtain a second functionalised polymer in the presence of the first functionalised polymer. The first compound has a protected amino group and at least one functional group is obtained from the protected amino group. The second compound is tetraalkyl orthosilicate or alkyl alkoxysilane and at least one functional group contains an alkoxysilane fragment.EFFECT: high degree of interaction of the polymer with filler and reduced tendency for agglomeration of the filler particles, which has a positive effect on physical properties of the articles.9 cl, 4 tbl, 17 ex

Rubber composition containing modified polybutadiene rubber and tyre based on said composition // 2431644
FIELD: chemistry.SUBSTANCE: rubber composition contains a rubber component and technical carbon. The rubber component contains modified polybutadiene rubber, natural rubber and/or at least one diene-based synthetic rubber. The modified polybutadiene rubber has content of cis-1,4 bonds equal to or greater than 92%, content of vinyl bonds equal to or less than 1.5% and 20% or more modified chain ends. The modified polybutadiene rubber is obtained via polymerisation of 1,3-butadiene in an organic solvent using a catalyst containing a compound having a rare-earth element of the lanthanoid family, and a modifier containing a nitrogen atom, an oxygen atom and/or a sulphur atom. The technical carbon has nitrogen adsorption specific surface area from 20 to 90 m2/g per 100 pts.wt rubber component. The rubber composition is used to produce tyre side walls.EFFECT: tyre made from the rubber composition has low heat build-up and high rupture resistance.15 cl, 11 ex, 2 tbl
 
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